The Action Programme for Nitrate Vulnerable Zones (Scotland) Regulations 2008 No. 298

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Regulations 7, 14 and 15

SCHEDULE 1 Calculation of nitrogen (“N”) in livestock manure

	Daily Excreta	Daily N production
Pigs
	(litres per animal/day)	(grams per animal/day)
Weight
From 7 to 13 kg	1.3	4.1
From 13 to 31 kg	2.0	14.2
From 31 to 66 kg–
dry fed	3.7	24
liquid fed	7.1	24
From 66 kg and–
intended for slaughter–
dry fed	5.1	33
liquid fed	10.0	33
sow intended for breeding that has not yet had its first litter.	5.6	38
sow (including litter up to 7 kg) fed on a diet supplemented with synthetic amino acids	10.9	44
sow (including litter up to 7 kg) fed on a diet without synthetic amino acids	10.9	49
Breeding boar from 66kg up to 150kg	5.1	33
Breeding boar, from 150kg	8.7	48

	Daily Excreta	Daily N production
Cattle
	(litres per animal/day)	(grams per animal/day)

^a Castrated males.
Calf (all categories) up to 3 months	7.0	23
Dairy cow
From 3 months up to 13 months	20	95
From 13 months up to first calf	40	167
After first calf and–
annual milk yield more than 9000 litres	64	315
annual milk yield between 6000 to 9000 litres	53	276
annual milk yield less than 6000 litres	42	211
Beef cows or steers^a
From 3 up to 13 months	20	93
From 13 up to 25 months	26	137
Over 25 months–	32	137
females or steers for slaughter	32	137
females for breeding–
weighing 500 kg or less	32	167
weighing more than 500 kg	45	227
Bulls
non-breeding, 3 months and over	26	148
breeding
From 3 up to 25 months	26	137
Over 25 months	26	132

	Daily Excreta	Daily N production
Sheep
	(litres per animal/day)	(grams per animal/day)

^a In the case of a ewe, this figure includes one or more suckled lambs until the lambs are aged six months.
From 6 months up to 9 months old	1.8	5.5
From 9 months old to first lambing, first tupping or slaughter	1.8	3.9
After lambing or tupping^a
weight up to 60 kg	3.3	21
weight over 60 kg	5.0	33

	Daily Excreta^a	Daily N production
Poultry
	(litres per bird/day)	(grams per bird/day)

^a This figure includes litter as appropriate.
Laying chicken
up to 17 weeks	0.04	0.64
17 weeks and over (caged)	0.12	1.13
17 weeks and over (free range)	0.12	1.5
Broiler chicken (table)	0.06	1.06
Broiler chicken (breeder)–
up to 25 weeks	0.04	0.86
25 weeks and over	0.12	2.02
Turkey
Male	0.16	3.74
Female	0.12	2.83
Duck	0.10	2.48
Ostrich	1.6	3.83

	Total N
Manure type
	kg/metres³ or kg/tonne
Solid manure
Cattle farmyard manure	6.0
Pig farmyard manure	7.0
Sheep farmyard manure	7.0
Duck manure	6.5
Poultry layer manure	19
Poultry broiler manure [litter]	30
Turkey manure [litter]	30
Cattle slurry
cattle slurry, 2% dry matter	1.6
cattle slurry, 6% dry matter	2.6
cattle slurry, 10% dry matter	3.6
Pig slurry
Pig slurry, 2% dry matter	3.0
Pig slurry, 4% dry matter	3.6
Pig slurry, 6% dry matter	4.4
Separated slurry (some solids removed)
Strainer box cattle slurry	1.5
Weeping-wall cattle slurry	2.0
Mechanically separated cattle slurry	3.0
Mechanically separated pig slurry	3.6
Dirty water (not slurry)
Dirty water, less than 1% dry matter	0.5

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